зеркало из https://github.com/mozilla/gecko-dev.git
129 строки
4.0 KiB
C++
129 строки
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/JSWindowActorBinding.h"
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#include "mozilla/dom/JSWindowActorChild.h"
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#include "mozilla/dom/WindowGlobalChild.h"
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#include "mozilla/dom/WindowGlobalParent.h"
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#include "mozilla/dom/MessageManagerBinding.h"
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#include "mozilla/dom/BrowsingContext.h"
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#include "nsGlobalWindowInner.h"
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namespace mozilla {
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namespace dom {
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JSObject* JSWindowActorChild::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return JSWindowActorChild_Binding::Wrap(aCx, this, aGivenProto);
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}
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WindowGlobalChild* JSWindowActorChild::Manager() const { return mManager; }
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void JSWindowActorChild::Init(const nsAString& aName,
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WindowGlobalChild* aManager) {
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MOZ_ASSERT(!mManager, "Cannot Init() a JSWindowActorChild twice!");
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SetName(aName);
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mManager = aManager;
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}
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namespace {
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class AsyncMessageToParent : public Runnable {
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public:
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AsyncMessageToParent(const JSWindowActorMessageMeta& aMetadata,
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ipc::StructuredCloneData&& aData,
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WindowGlobalParent* aParent)
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: mozilla::Runnable("WindowGlobalParent::HandleAsyncMessage"),
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mMetadata(aMetadata),
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mData(std::move(aData)),
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mParent(aParent) {}
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NS_IMETHOD Run() override {
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MOZ_ASSERT(NS_IsMainThread(), "Should be called on the main thread.");
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mParent->ReceiveRawMessage(mMetadata, std::move(mData));
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return NS_OK;
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}
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private:
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JSWindowActorMessageMeta mMetadata;
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ipc::StructuredCloneData mData;
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RefPtr<WindowGlobalParent> mParent;
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};
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} // anonymous namespace
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void JSWindowActorChild::SendRawMessage(const JSWindowActorMessageMeta& aMeta,
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ipc::StructuredCloneData&& aData,
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ErrorResult& aRv) {
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if (NS_WARN_IF(!mManager || mManager->IsClosed())) {
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return;
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}
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if (mManager->IsInProcess()) {
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RefPtr<WindowGlobalParent> wgp = mManager->GetParentActor();
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nsCOMPtr<nsIRunnable> runnable =
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new AsyncMessageToParent(aMeta, std::move(aData), wgp);
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NS_DispatchToMainThread(runnable.forget());
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return;
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}
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// Cross-process case - send data over WindowGlobalChild to other side.
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ClonedMessageData msgData;
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ContentChild* cc = ContentChild::GetSingleton();
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if (NS_WARN_IF(!aData.BuildClonedMessageDataForChild(cc, msgData))) {
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aRv.Throw(NS_ERROR_DOM_DATA_CLONE_ERR);
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return;
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}
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if (NS_WARN_IF(!mManager->SendRawMessage(aMeta, msgData))) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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}
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Document* JSWindowActorChild::GetDocument(ErrorResult& aRv) {
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if (!mManager) {
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return nullptr;
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}
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nsGlobalWindowInner* window = mManager->WindowGlobal();
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return window ? window->GetDocument() : nullptr;
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}
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BrowsingContext* JSWindowActorChild::GetBrowsingContext(ErrorResult& aRv) {
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if (!mManager) {
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return nullptr;
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}
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return mManager->BrowsingContext();
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}
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Nullable<WindowProxyHolder> JSWindowActorChild::GetContentWindow(
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ErrorResult& aRv) {
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if (BrowsingContext* bc = GetBrowsingContext(aRv)) {
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return WindowProxyHolder(bc);
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}
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return nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(JSWindowActorChild, JSWindowActor, mManager)
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(JSWindowActorChild,
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JSWindowActor)
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(JSWindowActorChild)
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NS_INTERFACE_MAP_END_INHERITING(JSWindowActor)
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NS_IMPL_ADDREF_INHERITED(JSWindowActorChild, JSWindowActor)
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NS_IMPL_RELEASE_INHERITED(JSWindowActorChild, JSWindowActor)
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} // namespace dom
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} // namespace mozilla
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